C8953 NMR structural analysis - seminar INADEQUATE + Stereochemistry Michal Knor 437395@mail.muni.cz May 5, 2021 1 INADEQUATE 2 • Incredible Natural Abundance DoublE QUAntum Transfer Experiment • INADEQUATE experiments are mainly used for 13C-13C correlation spectra of natural abundance 13C molecules • Low sensitivity 2D INADEQUATE - example 3 Determine the structure of C10H18O using INADEQUATE exp. 4 Determine the structure of C10H18O using INADEQUATE exp. 5 Isomerism and NMR 6 Relative stereochemistry on a ring: NOESY 7 Relative stereochemistry on a ring: NOESY 8 Interpretation of J-coupling 9 Interpretation of J-coupling 10 Interpretation of J-coupling: MYO isomer 11 Determination of the absolute configuration of stereogenic centers 12 Determination of the absolute configuration of stereogenic centers 13 Determination of the absolute configuration of stereogenic centers 14